How to judge whether it is a cyclone or an anticyclone without horizontal airflow? Just like this question, I only tell you that in the northern hemisphere. How to judge?

Analysis: It is often difficult for students to judge how to judge the airflow problems of cyclones and anticyclones in the southern hemisphere and the northern hemisphere and how to judge the wind direction of a certain point in the cyclone and anticyclone diagram. It is easier and more correct to judge by the following methods.

1. How to judge the flow direction of cyclones and anticyclones in the southern hemisphere and the northern hemisphere?

(1) Judging the cyclone airflow direction:

(1) Determine the direction of cyclone airflow in the northern hemisphere.

Stretch out your right hand. The female finger is perpendicular to the four fingers. The upper part of the female finger indicates high pressure, and the lower part indicates low pressure. Then the four fingers cling to the palm of your hand, indicating that the airflow flows from all sides to the center. The curved shape of the four fingers is the airflow direction.

② The left hand can be used to judge the flow direction of the cyclone in the southern hemisphere, and the method is the same.

(2) judging the flow direction of the anticyclone airflow:

① Judging the flow direction of anticyclone in the northern hemisphere.

Similarly, with the right hand, the female finger is perpendicular to the four fingers, but the female finger is facing down, and there is high pressure below. The four fingers bend slightly outward, indicating that air flows outward from the center, and the shape of the four fingers bend is the direction of air flow.

② You can judge the flow direction of anticyclone in the southern hemisphere with your left hand, and the method is the same.

Second, how to judge the wind direction of a point in the cyclone and anticyclone diagram?

(1) If no direction is specified, the direction can be determined by "up north and down south, left west and right east", and then a small direction mark of "up north and down south, left west and right east" can be drawn on the cyclone or anticyclone map through a certain point, which can indicate the wind direction at a certain point.

(1) For example, judge the wind direction of points A, B, C, D, E, F, G and H in the cyclone map of the northern hemisphere.

A is southeast wind, B is southeast wind, C is northeast wind, D is northeast wind, E is northwest wind, F is northwest wind, G is southwest wind, and H is southwest wind.

② The method of judging the wind direction of each point in the southern hemisphere cyclone map is the same.

(3) judging the wind directions of A, B, C, D, E, F, G and H in the anticyclone map of the northern hemisphere. As shown in figure 2-3 1, A is northwest wind, B is northwest wind, C is southwest wind, D is southwest wind, E is southeast wind, F is southeast wind, G is northeast wind and H is northeast wind.

④ The method of judging the wind direction of each point in the southern hemisphere anticyclone map is the same.

(2) When there is a specified direction, draw a small beacon in the specified direction at each point on the cyclone or anticyclone map according to the specified direction, which will show the wind direction at each point.

(1) For example, judge the wind direction of points A, B, C, D, E, F, G and H in the cyclone map of the northern hemisphere. As shown in Figure 2-32, A is southeast wind, B is northeast wind, C is northeast wind, D is northwest wind, E is northwest wind, F is southwest wind, G is southwest wind and H is southeast wind.

(2) If the wind direction of a certain point in the southern hemisphere cyclone map is judged, the method is the same.

(3) If the wind directions at points A, B, C, D, E, F, G and H in the anticyclone map of the northern hemisphere are judged, as shown in Figure 2-33, A is southeast wind, B is northeast wind, C is northeast wind, D is northwest wind, E is northwest wind, F is southwest wind, G is southwest wind and H is southeast wind.

④ If the wind direction of a certain point on the anticyclone map in the southern hemisphere is judged, the method is the same.